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Fuel Tank Selection

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france
Hi !

I'm trying to select the fuel tank for each engine of the default B737-800 in FSX using the events FUEL_SELECTOR_SET and FUEL_SELECTOR_2_SET.

The first one (FUEL_SELECTOR_SET) works perfectly while the other one for engine 2 doesn't seem to have any effect (I read the corresponding data to check, and also check the fuel use on the gauges).

Any idea ? is that a bug of FSX ?

Next question : what is the effect of the "FUEL_TANK_SELECTOR_ISOLATE" code for the fuel tank selector. I want to use the crossfeed valve and the doc indicates that it must be done in conjunction with this selector code, but it's pretty unclear.

regards
 
Well, I'll have to answer my own question myself.

In case somebody else is interested, I'll share my findings here.
The point is that the aircraft config has to be modified accordingly (the aircraft.cfg file of the given plane). In the [FUEL] section, the parameter "number_of_tank_selectors" is usually set to 1 in many airplanes config. It's necessary to set it to the actual number of engines, so we have 1 fuel selector for each engine, and then, they can be set using the "FUEL_SELECTOR_SET" events to draw fuel from any tank selected.

regards

Oliver
 
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